Air conditioning apparatus



2 Sheeis-Sheet l Ii i; INVENTOR. AABE/QT 14. P415) A. A. PALEY AIRCONDITIONING APPARATUS BY W 9. AffOf/Vf) A. A. PALEY AIR CONDITIONINGAPPARATUS Aug. 18 1959 2 Sheets-Sheet 2 Filed Feb. 15, 1955 INVENTOR.AZBLET A P415) W AIR CONDITIONING APPARATUS Albert A. Paley, KcwGardens, N.Y.

Application February 15, 1955, Serial No. 488,332

2 Claims. (Cl. 62-291) This invention relates to new and usefulimprovements in air conditioning devices and a main object is to providea simple, efficient, and relatively economical device which can be usedas a ventilating device, a heating unit, or an air-cooling unitdepending upon whether no liquid, hot liquid or cool liquid is runthrough its conditioning coils.

A further object is to provide a device in which the passage ofundesirable amounts of moisture into the room through outlet louvers issubstantially reduced.

A still further object is to provide a device in which pressure on theconditioning coil element is equalized over its entire face.

Yet another object is to provide a device in which the pressure on alloutlet louvers is equalized.

Another object is to provide a device in which the parts are readilyaccessible for adjustment and repair and the control knobs can bemanipulated with case without removing the casing covering the same, andin which a filter associated with the inlet louvers may be cleanedefiiciently without removing the same from the device.

Further and more specific objects, features, and advantages will moreclearly appear from a consideration of the specification hereinafter setforth especially when taken in connection with the accompanying drawingswhich illustrate the preferred form of the invention and form part ofthe specification.

The present preferred form which the invention may assume is ilustratedin the drawings, of which,

Fig. l is a front elevation of the device;

Fig. 2 is an enlarged front View of the device with the front coverplate removed; and,

Fig. 3 is a vertical front to rear cross section taken on the line 33 ofFig. 2.

Referring now merely to the specific form of the invention shown in thedrawings, there is a casing having a rear wall 10, bottom and top walls11 and 12, side walls 13 and 14 and a front wall 15 whichtakes the formof a removable cover plate having upper and lower louvers 16 and 17therein.

There is an intermediate vertical wall 18 supporting a blower motor 19in any suitable manner, as by means of the spider 27 indicated in Figure3. Above the motor and connected to the top of the wall 18 is ahorizontal wall 20 having walls 21 to form a sort of trough or pan toreceive any condensate. A wall 22 slopes rearwardly back of the lowerend of the conditioning coil unit which is composed of zig-zag coils 23and radiating fins 24. The upper ends of the coil unit are suitablyconnected as by welding to an inner spaced horizontal wall 25 and theunit, as shown in Fig. 3, slopes downwardly and forwardly with itsbottom extending forwardly of the sloping wall 22, which functions toslightly constrict the air discharge orifice and increase the airvelocity. Any condensate therefor which is formed on the coils or thefins is caused by gravity to flow down into the pan where it evaporates.The upper 2,899,803 Patented Aug. 18, 1959 louvers 16 are disposed wellabove the trough so that condensate is not carried directly into the airstream out through the louvers. The arrows in Figs. 2 and 3 "indicatethat the trough has an opening up through which the air is impelled bythe blower. It then contacts the "back face of the conditionnig unit andpasses between the coils and the fins and proceeds directly out throughthe upper louvers 16. V

The air is drawn in through the lower louvers 17 back of which isdisposed a filter element 26 suitably disposed immediately back of thelower louvers 17. As shown particularly in Fig. 2 the motor issurrounded by an auxiliary casing having walls 27, 28, and 29constituting a type of blower scroll which functions in a manner thatair drawn in through louvers 17 through the filter 26, will passdirectly to the opening in the bottom of the pan in the path anddirection indicated by the arrows and thus achieve the maximum effect.

The incoming air affects a thermostat 30 which is connected in anysuitable manner to a thermostatic control unit 31 of any desired type.Adjacent the control unit 31 is a suitable motor control unit 32. Boththese units are disposed and supported on the walls of the casing in anydesired manner not specifically shown. Control knobs 33 for these unitsare covered by a pivoted cover plate 34 hinged to the removable frontwall "15 so that the controls can be manipulated without removing thefront cover. An electrical junction box is indicated at, 35 and a drippipe ,36 from the condensate trough.

In the operation of the device, the motor is started and the motorcontrol unit 31 and the thermostat temper-ature control unit 32 areadjusted as desired. Liquid is allowed to pass through the pipes 23 ifthe device is either an air heater or cooler. The blower unit attachedto motor shaft will draw air into the lower louvers 17, through thefilter 26 and up into the casing back of the coil unit. The coil unit issloped as shown and this forms a primary plenum chamber A and asecondary plenum chamber B. This disposition of the parts creates equalpressure on the entire face of the coil unit. The slanting design of thesecondary plenum chamber B also creates equal pressure on all outletlouvers.

The relative location of the outlet louvers 16 oppo site the upper halfof the face of the coil unit disposes a blank wall opposite the lowerportion of said unit which is the most heavily moisture laden part ofit. Thus most of the moisture in the air stream is precipitated on saidblank wall thus running off harmlessly into the condensate pan disposedjust below the unit. Therefore any undesirable moisture carryover iseliminated while air conditioning.

The filter 26 is removably fastened directly to the cover and is inrelatively close proximity to the inlet louvers 17, allowing forexpedient cleaning of the filter directly through the louver openings bymeans of a vacuum cleaner, thereby extending the useable life of astandard filter and at the same time keeping the unit at its maximumefliciency and in good working order.

The removable front cover is equipped with a secondary control door orcover 34 disposed in front of the control knobs 33 so that they may beadjusted without removing the front cover 15. The front cover also maybe removed to gain access to both upper and lower interior parts wtihoutremoving nor disturbing any controls, knobs or settings.

It is obvious that the device has many uses. If hot water is run throughthe pipes 23 it is a heating unit; if cold water, it is a cooling unit;if no liquid at all is run through the pipes, it may be merely aventilating device by passing air through the device and blowing it outthrough the upper louvers.

While the invention has been described in detail and with respect to apresent preferred form thereof, shown in the accompanying drawings, itis not to be limited to such details and forms, since many changes andmodifications may be made in the invention without departing from thespirit and scope of the invention in its broadest aspects. Hence, it isdesired to cover any and all forms and modifications of the inventionwhich may come within the language or scope of any one or more of theappended claims.

What I claim is:

1. An air-conditioning device comprising an upright box-like casinghaving extensive, parallel front and rear walls, said casing beingrelatively shallow from front to rear and including tall and narrow sidewalls extending between and joining the said front and rear walls, saidfront casing wall having an air intake louver extending along its bottomportion and an air outlet louver extending along its top portion, saidlouvers being vertically spaced from each other by a solid portion ofthe front wall; a generally flat air-conditioning coil disposed in theupper portion of the casing, said coil tilting backward and having itsupper portion disposed rearward of the air outlet louver in the upperportion of the front wall, the lower portion of the air-conditioningcoil being disposed at a level below the said outlet louver and rearwardof the said solid portion of the front wall; a centrifugal rotary blowerdisposed in the lower portion of corresponding substantially coplanarends juxtaposed to from the front casing wall and being disposedrearward of the inlet louver in the bottom portion of said wall, the airentering the casing through the said inlet louver flowing in an axialdirection past the motor and to the interior of the rotor, thereby tocool the motor, said centrifugal blower further including a supportingspider attached to the forward end of the motor and mounted on the saidblower scroll; and sheet-like filtering means disposed within the lowerportion of the casing between the said intake louver and the motor ofthe blower, to filter the air which is sucked into the casing by theblower, said blower scroll having a discharge orifice in its upperportion located forward of and adjoining the rear casing wall and underthe air-conditioning coil, said discharge orifice having a mouth ofreduced area and an angularly disposed wall, thereby to increaseappreciably the velocity of the air discharged from the blower againstthe airconditioning coil.

2. The invention as defined in claim 1, in which there is a condensatepan disposed in the casing below the bottom of the said coil, to receivethe condensate which passes by gravity down the coil, said condensatepan having upwardly extending peripheral walls and one of "saidperipheral walls being constituted by the angular wall -of the' blowerscroll at the discharge orifice thereof.

References Cited in the file of this patent UNITED STATES PATENTS"2,292,562 Huggins Aug. 11, 1942 2,3Q7,283 Lonergan Jan. 5, 19432,324,313 Meyerhans July 13, 1943 2,600,316 Moore June 10, 1952,2,686,630 Burrowes Aug. 17, 1954 2,697,921 Brugler Dec. 28, 1954

